dlewis2583

Sup HT,
On my 97 SE, My check engine light came on & i took it to autozone and they gave me the code P0171...saying system is too lean? What does that mean?

jdmcertified909

it could be a lot of things. bad injectors. bad fuel filter. bad pump. o2 sensor might be going out. the code just tells you wrong with it. you have to diagnose it to pinpoint whats at fault. a scanner never! tells you what to replace

dlewis2583

smh.....damn...

jdmcertified909

http://www.hondacarforum.com/honda-t...171-codes.html

https://honda-tech.com/forums/honda-accord-1990-2002-2/p0170-p0171-97-honda-accord-2852819/

redbull-1

For your 1997 Accord, I would lean toward more where it may be due to the primary oxygen sensor.

dlewis2583

Thanks...I'll check the links out!

dlewis2583

Thanks redbull! Its been about 6 years since ive replaced both o2 sensors...

dlewis2583

So this morning, the check engine went off. My question is, Do i ignore this issue now that the light went off or do I proceed 2 check out my primary sensor, fuel regulator, etc.?

cf8tuner

i have the same code i did a tune up knowing i needede one and no diffrence it is runing poor at idle and there is no power at below 2500 rpms the plugs i took out had white residue on the electrode i dont know if thats any idication on the problem btw its a 02 accord dx f23a5 engine i just wondering how bad is it to drive on this code becaussde this is my daily driver and i dont have another and i dont want to kill my car i recently changed the catalytic converter also should i start with the o2 sensor and if so can it be clean because im BROKE

jdmcertified909

Sounds like you running lean. And did you gap your spark plugs right? Just cuz you buy spark plugs that are gapped doesnt mean there gapped right ALWAYS GAP them before putting them in. You could clean it with some o2 sensor safe cleaner. But it wont last clean its already out.

cf8tuner

i gapped the plugs correctly and everything and the car is idling fine now but it is still very sluggish the check engine light has not came back on (i disconnected the battery when i did plugs) and i did a test on the fuel injectors by removing one and checking the rpms and they where fine so i have no idea i was told maybe the idle air control valve but would that affect just the one cylinder as the code says any other ideas?

jdmcertified909

Honestly ive never seen the iacv affect just one cylinder. It feed extra ait to all four runners in the intake

cf8tuner

yeah the check engine light just came back on today and the idle started screwing up again right as it came on no idea what could be cousing it.....
any more ideas id figure sense its only idling bad when the light is actully on it would deffinatly be a sensor and not the fuel pump or regulator

cf8tuner

on my 02 accord DX i just also got code reader and got a new one p0170 and i still got the p0171

jdmcertified909

Did you read my post? A scanner doesnt tell you what to replace. It tells you what the problem is. Then diagnose it futher to find out whats at fault..

cf8tuner

yeah but i figured with the new code it could possibly narrow it down i read other threads and i think i am going to change the fuel pressure regulator and o2 sensor and hope that helps

cf8tuner

my engine light went out because i now have a leak infront of the catalytic converter on the flex pipe i dont know if its because the o2 sensor in the cat because i did just have the cat replaced i am not sure if its going to stay out please any help would be appriciated

peter t

those 0171 codes are a sure pain. I changed my front 02 sensor, didn't clear the code, changed my FF had never been changed (170,000) cleared the lean condition, but now I'm getting an EGR code. Been a real pain in the butt, can't get my tags till I get it cleared (live in Cali) if I can't clear the EGR code, gonna take it to the shop, tired of messing with this thing. Don't mean to be a negative nilly, but it's been a pain

peter t

Well, pulled my fuel injectors, rail, and EGR chamber, ports weren't too bad didn't look like any were completely clogged. Cleaning the chamber and replaced the gasket. Sent my injectors out to get professionally cleaned. Get the injectors back tomorrow and gonna throw it back together.

kTrain89

Any updates with this problem?

dlewis2583

It was my front O2 sensor

thaplebe123

My 06 accord 4 cyl is having issues while it's idling. The rpms will fluctuate up and down and sometimes my engine will actually die and I have to restart my car. The check engine light goes off and on and I was able to check it and it came up as p0171. Can someone point me in the right direction of where to start? I know it could be a variety of issues but I'm wondering based on what my car is doing if there are more logical places to start(like start with mass airflow sensor vs vacuum leak etc) so I don't have to troubleshoot 5 things before I fix the problem. Thanks